Ball-and-drum pulverizing-mill.



O. MOGORMIGK. BALL AND DRUM PULVEBIZING MILL."

APPLICATION FILED I-EB.9, 1911.

I Patented Apr. 1 ,1913.

2 SHEBTS-SHEET 1.

O. MOGORMIGK.

BALL AND DRUM PULVBRIZING MILL. APPLICATION FILED FEB. 9', 1911.

1,057,649. Patented A r; 1, 19134 2 QIIEETS-SHEET 2.

WWW: mcyw I. as

j "adapted, of cou-rse, for use in mixing the in '4"4,'Figr l; and Fig.

' cement hereinabove referred. to, but any i sired, a handle 5s s, The standard 11 isof greater height;

Be it known that I, fOEACBIlES MoCoRmom-j "a -'c'itizenof the United 'States', residing in? the city of St. stateofMissourh'have 6 invented certain new and useful Improve ments inrBall-and-Drnm Pulverizing=Mills,j

- 'of whichwthc following is aspecificatiom This invention relates'to cement-mixing machinery, and has for its object to provide M an improved machine-of this character that is primarily intended for nse -in-mixin the "ingredients ofthe waterproof Portlan cement disclosed in'my. Unitedstates Patent. No. 931,884,- iss'ued August 24:, 1999, thoughv ,lgredients'of other compounds. In the accompanying-drawingsforming art otffthis specificatiomin which like hum-z of reference denote like parts wherever they occur, 1 is a -side elevation of 'a' mixer-embodying this invention; Fig. 2 is 'a top plan view of same; Fig. Sis a longitudi- *hal sectional view of Fig. 2; Fig; 4 is a sec- :tional view, on an enlarged scale, on the line, is asectional'view, on anenlar'ged' scale, on the line 5+5, Fig. 1. Throughout the specification, wherever. the word compound is used, same is intended; tomea'n not only the waterproof Portland? other componndj I The machine 'comprisesa. hollow. drum or 'cylinder 1 thereceiving and-- discharging ends of which are closed by means of heads 2 and 3, respectively, each of said heads 'havingan annular flanged which is fastened to:v sold by halts 5 brother suitable means; Thehead 2 contains an opening .6 throng}: which the ingredients or-the compound to .1 mixed are fed into said drum from spent 7,- of a, hopper 8"and bears 'ahnb 9, which is :journaled in a journal-box '10, supported on; a "suitable standard- 11* said hopper being su ported by means at braces 12 that are bo ted or otherwise secured to said standard. A shaft 13 is preferably formed integrally with head 3 and is likewise journaled in another journal-box 10, en ported on standard. '14. A pulley 15 is 1-1 ly mounted on shaft 13 and is driven by It 16, which receives its power from an suitable source, or, if de- 7 not shown) may be attached to said pulley, in order to afford a means by which same can be rotated by 1 I than the standardl' l "movement of the drum 1, as hereinafter dej and '18, divided I ratentedhpniflsi. Serial Io, 607,564. I

and holds the receiving end of drum 1 11i her than the discharging end thereof, so t at the axis of *rotation slopes downwardly from standard -11 'to standard-14.; By this arrangement, while .thecompound. is being mixed by the rotary scribed,' gravity causes the sameto travel fromheadfl to head-3. The slope of the drum 1-, -however, that the compound travels slowly there- 'through, with the result that the compound is subjected to the rotary movement 'of said drum 'suflicicnt-ly to cause the ingredients of same to become thoroughly mixed.

., The drum lis, b'y-means of 'diapln'a'gnisl'f into three compartments, v1z., a receiving compartment 19 located between head '2 and dlaphragm 17, "a I I compartment 20 located between the diaphragms 17 and 18, and :a'dischargin' com- 'artment 21 located between the her 3 and iaphrag'm 18, the capacity of the receiving compartment being preferably larger than" the capacity of "the discharging compartment, and the mixing compartment being considerably larger'than either thereceivin 'g or the discharging compartment. The dia hragms 17 and 18 are }connected to the eads -2 and 3, respectivelg, bolts 22 and-are spaced theesired distances therefrom by sleeves 23, through which said bolts pass, or by any other suitable means. "Said diwphra gms contain a plurality of per forations 24' through which the ingredients of the'compmmd that enters the receivin" compartment 19, as hereinabove describetf pass into the mixing compartment 20 and then, after same are mixed in said compartment 20, the compound passes into the discharging compartment 21. The diaphragm 17 preferably contains a greater number of perforations"24 than the diaphragm 18, as to allow the ingredients of the composes" to pass'f'rom the receiving compartment 19 into the mixing compartment '20 faster than what the compound passes from the mixing compartment 20 into the discharging coinis preferably slight, so 05 by means "of v..YL.;.

' as to permit same to be cleaned or to allow the pebbles or stones 28 or similar hard and weighty objects to be inserted into said com- I partment or removed therefrom. A quantity of ebbles or stones 28 that is preferably su cient to fill the bottom part of the mixing compartment is placed within same, and the hand-hole 25 is then closed by means of the plate 26. As the drum 1 rotates, the pebbles 28 roll over and over and tumble vabout with the ingredients of the compound within the mixing chamber and thereby not only breaks up any lumps ofthe ingredients, but thoroughly mixes the ingredients before the compound passes from said mixing compartment into the discharging compartment 21 in the manner hereinabove described.

Perforations 29 are formed in the pe riphery of the particular part of the drum that forms the wall of the discharging compartment 21, and allows the compound to discharge from said compartment. A suitable hopper or receptacle 30 underlies the discharging compartment 21, in order to receive the compound that discharges from perforations 29, and is supported by means of a bracket or brackets 31 bolted or other- Wise secured to standard 1 L Said hopper bears a discharge spout or spouts 32 from which the compound discharges into sacks or bags 33 or any other suitable receptacle or receptacles thatmay be supported upon the floor or other support. Each spout 32 is provided wlth a slot 34 through 'which a plate or gate 35 extends for the purpose of controlling the passage of the compound through said spout. Plate 35 bears a handle 36 by means of which same can be moved inwardly and outwardly through slot 34 in order to close and open the-passage through spout 32. When the plate 35 is drawn out- Wardly to open the spout 32, its handle 36 can be hooked over ahook 37, or the like, borne by hopper 29 and thereby be held in position to allow the compound to discharge through said spout into a sack or bag 33. Springs 38 are fastened to spout 32 by any suitable meansand are arranged to hold the mouth of a sack 32 open beneath the mouth of said spout, so as to hold said sack in the correct position to receive the compound that discharges from said spout. Whenever it is desired to place a sack 33 in position to receive thecompound that is allowed to discharge from a spout 32, the springs 38 borne by said spout are sprung inwardly in order to fit into the mouth of said sack and then memes are released to hold the mouth of the sack open. sage of the compound through spout 32 is drawn outwardly to allow the compound to discharge into the sack. After the desired amount of compound has discharged into the sack, the flow thereof is cut off by moving the plate 33 inwardly to close the spout 32, after which the springs 38 are sprung inwardly so that the filled sack can be removed and an empty one put in its place tobe filled as hereinabove described.

The operation of the machine is evident from the above description, but may be summarized as follows: The drum 1 is rotated either by the application of ower from any suitable source to belt 16 or y rotating pulley 15 by hand, the directionof rotation being immaterial. The ingredients of the compound to be mixed are placed 'or fed in their proper proportions into hopper 8 from which they discharge through spout 7 into the receiving compartment 19. The ingredients that enter the receiving compartment 19 are agitated by the rotary movement of the drum and, due to the fact that the drum slopes downwardly from the receiving compartment, the ingredients are caused to pass through the perforations '24 in diaphragm 17 into the mixing compartment 20. The ingredients gravitate slowly through the mixing compartment, while, at the same time, the rolling and tumbling of the pebbles 28 in said mixing compartment churn and mix the ingredients, with the result that the mixture of the ingredients in their proper proportions is uniformly disseminated throughout the mass of cement or compound. The mixed cement or compound gravities through the perforations 24: in diaphragm 18 into the discharging compartment 21 and then discharges through the perforations 29 into the hopper 30, from which same passes ready for use into the sacks 33, as hereinabove described.

I claim:

In a cement mlxer, an inclined drum, an imperforate'head at one end of the drum, a perforated diaphragm in the drum spaced from said head to forma discharging chamber in conjunction therewith, the drum being formed with peripheral perforations in the space between said head and diaphragm, a head at the opposite end of the drum having an inlet opening, a perforated diaphragm in the drum located in spaced relation to the last named head to form a receiv ing chamber, said diaphragms being of similar structure and the perforations thereof being of the same diameter, the first named diaphragm having a less number of perforations than the second named one, the diaphragm of the receiving chamber being located at a greater distance from the head having the inlet opening than the distance The plate 35 which controls the pasbetween the imperforate head and the first named diaphragm to provide a receiving chamber that is larger than the discharging chamber, and a series of balls or the like bea tween the diaphragms, there being, due to the inclination of the drum, a greater quantity of said balls in engagement with the diaphragm of the discharging chamber than are in engagement with the diaphragm of the receiving chamber.

In testimony whereof I hereunto aflix my signature in the presence of two Witnesses.

CHARLES MCCORMICK.

\Vitnesses GLAp s WVALTON, GEORGE G. ANDERSON. 

